EM91810A/B
EM91810A/B
TONE/PULSE
TONE/PULES
SWITCHABLE
SWITCHABLE
DIALER
DIALER
WITH
WITH
LCD
LCD
INTERFACE
INTERFACE
GENERAL DESCRIPTION
The EM91810A/B are Tone/Pulse switchable dialer which are fabricated in CMOS technology with wide
operating voltage for both tone and pulse mode, and consumes very low memory retention current in ON-HOOK
state. EM91810A/B also provide SDO (serial data output) function to drive LCD driver (EM32100, EM32116,
EM32117) and voice synthesizer.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Tone/pulse switchable dialer.
One 32-digit last number redial memory.
Pulse to tone (P→T) is provided for PBX operation.
Flash key is available.
Minimum tone duration is 98ms or 83ms.
Minimum intertone pause is 98ms or 83ms.
Uses 3.579545 MHz crystal or ceramic resonator.
Many options can be selected.
Mode (10 PPS ; 20 PPS ; Tone)
M/B ratio (40 : 60 ; 33 : 66)
Pause time (3.6s)
Flash function (RESET)
P→T pause time (3.6s)
Flash time (600ms; 300ms; 100ms; or 80ms).
Mixed dialing.
Handfree function is provided for speaker phone application.
Power on reset circuit is provided.
Package in DIP18 or DIP20.
SDO function that is supported to drive LCD driver (EM32100) and voice synthesizer to indicate dialing
number.
Key tone function is provided.
PIN ASSIGNMENTS
EM91810A
C2
C3
C4
C1
OSCI
OSCO
XMUTE
VSS
SDO
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
* This specification are subject to be changed without notice.
EM91810B
R3
R2
R1
R4
TONE
PO
HKS
VDD
KT
C2
C3
C4
C1
OSCI
OSCO
XMUTE
V SS
HFI
SDO
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R3
R2
R1
R4
TONE
PO
HKS
VDD
HFO
KT
10.1.1997
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EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
KEYBOARD ASSIGNMENT
C1
1
4
7
*or*/T
R1
R2
R3
R4
C2
2
5
8
0
C3
3
6
9
#
1). P→T
2). F
3). RD
4). P
5). */T
C4
P→T
F
P
RD
: In pulse mode, execute P→T function.
: Flash key.
: Redial key.
: Pause key.
: In pulse mode, execte P→T function
In tone mode, execte "*" key.
VDD
HFO
KT
SDO
XMUTE
FUNCTIONAL BLOCK DIAGRAM
OUTPUT INTERFACE CKT.
COL4
OSCI
OSCO
OSC.
ROW
INTERFACE CKT.
DIVIDER
ROW1
ROW2
ROW3
DECODER &
DATA LATCH
LNB MEMORY
ROW/COLUMN
PROGRAMMING
COUNTER
D/A CONVERTER
TONE
INPUT INTERFACE CKT.
HKS
ROW4
PO
V
SS
COL3
PULSE
GENERATOR
HFI
COL2
KERNEL CONTROL CKT.
COLUMN
INTERFACE CKT.
COL1
DIALING SIGNAL OPTION :
b).
a]:Flash time:
Row1 Row2 MODE PULSE RATE
Row3 Row4 flash time(ms)
NR
NR
600
NR
R
300
R
NR
100
R
R
80
c]:Tone function:
inter-Tone
Pause
Col1
Tone Duration
NR
98 ms
98 ms
R
83 ms
83 ms
M/B
R
NR
TONE
R
R
TONE
NR
NR
PULSE
20PPS
40:60
NR
R
PULSE
20PPS
33:66
UR
NR
PULSE
10PPS
40:60
UR
R
PULSE
10PPS
33:66
d]:Key type select
Col2 *or*/T
select
NR
*
R
*/T
* This specification are subject to be changed without notice.
Note: NR:no resistance.
R : A resistance connect to Vss (820KΩ typically)
UR: A resistance connect to VDD
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TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
PIN DESCRIPTION
Symbol
C1
C2
C3
C4
R1
R2
R3
R4
Function
Provides keyboard scanning .
a. Keyboard scanning:
HKS pin is LOW, the column group stays in "HIGH" stays and row group stays in "LOW" state.
The key pad is compatible with the standard dual contact matrix keyboard (as Figure 1b.), the
inexpensive single contact keyboard (as Figure 1a.), and electronic input (as Figure 1c.).
When HKS is “low”, a valid key entry is defined by related Row & Column connection or by
electronic input; (as show in Figure 1c).
Activation of two or more keys will result in no response, except for single key.
To avoid keyboard bouncing error, this chip provides built-in debounce circuit. (The debounce
time = 20 ms.)
Row
Column
Figure 1a : Single contact form keyboard configuration
Row
Column
Figure 1b : Dual contact form keyboard configuration
Row
Column
VDD
VSS
VDD
VSS
Figure 1c : Electronic signal input keyboard configuration
OSCI
OSCO
XMUTE
VSS
VDD
HKS
PO
Oscillator input & Oscillator output pins.
The 3.579545 MHz oscillator is formed by a built-in inverter inside of this chip and by connecting a
3.579545 MHz crystal or a ceramic resonator across the OSCI and OSCO pins. (built-in feedback
resistor and capacitor)
When HKS is “low”, a valid key-in may turn on this oscillator and generates a 3.579545 MHz clock.
Mute output pins.
NMOS open drain output structure.
The output is in “low” state during dialing sequence (both Pulse and Tone mode) otherwise this pin
is “high-impedance” .
Long (continue) Mute.
Negative power supply pin.
Positive power supply pin.
Hook switch input pin.
When the handset is in ON-HOOK state, this pin must be pulled “high” in order to disable the dialing
operation and decrease the power consumption.
When in OFF-HOOK state, the HKS pin must be pulled “low” state for all function operation.
Pulse output signal pin.
NMOS open drain output structure.
The output is “low” during pulse dialing and Flash operation, otherwise this output is “floating”.
* This specification are subject to be changed without notice.
10.1.1997
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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Symbol
TONE
HFI
HFO
SDO
KT
Function
Dual Tone Multi-frequency output pin.
In TONE mode, when a entry of digit key (include * , # key), this pin will sent out a corresponding
DTMF signal.
The TONE pin provides minimum tone duration (tTD),& minimum intertone pause time to support rapid
key-in. If key-in time is less than tTD , DTMF signal will last for tTD , otherwise the tone duration will
last as long as the key is pressed.
Handfree input control pin.
Toggle input sturcture, falling edge trigger.
It is used to enable and disable Handfree function.
With waveshaped by a built-in Schmit trigger, the bounce of input can be eliminated by external R,
C debounce circuit.
A built-in pull up resistor is 200K typical.
Handfree output pin.
Inverter output structure (normally "low", active "high").
When a HFI pin is active, Handfree function will be enabled (HFO=1) or disabled (HFO=0).
When the Handfree function is enable (HFO=1), after OFF-HOOK action, it can reset Handfree
function and HFO pin return to "low" state.
Serial data output pin.
NMOS open drain output structure.
When there is a valid entry on keyboard, this pin will output a serial data.
This serial data is designed to drive LCD driver to display dialing number on LCD screen or drive
voice synthesizer to announce dialing number to speaker.
Key tone output pin for key pad input. The key tone duration is the same as the key pressed time.
No matter at Tone mode or pulse mode.
Inverter output structure.
FUNCTION DESCRIPTION
Keyboard Operation
Symbol definitions:
a). ↑
: OFF-HOOK or enable Hand Free function.
b). ↓
: ON-HOOK or disable Hand Free function.
c).
: Input level from low to high.
d).
: Input level from high to low.
e). D1.....Dn : Digit key; 1,2,3,4,5,6,7,8,9,0,*,# (C1.....Cn is same as D1.....Dn ).
f). DP1... DPn : Pulse digit ; 1,2,3,4,5,6,7,8,9,0, (CP1... CPn is same as DP1... DPn).
g). D t1....Dtn : Tone digit ; 1,2,3,4,5,6,7,8,9,0,*, # (Ct1....Ctn is same as Dt1....Dtn).
h). tF
: Flash time.
i). t P
: Pause time.
j). t PT
: Pulse to Tone wait time.
k). tFP
: Pause time for flash.
l). t RP
: Pause time for redial.
m). LNB
: Last number redial buffer.
* This specification are subject to be changed without notice.
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
A. Normal Dialing
1. Digit Dialing
Procedure : ↑ D1,D2 . . . . . ., Dn↓
Dial out : Dt1, Dt2 . . . . . . ., Dtn in tone mode
Dial out : Dp1, Dp2 . . . . . ., Dpn in pulse mode
LNB
: D1, D2 . . . . . . Dn
2. Dialing with flash key
Procedure : ↑ F,D1,D2 . . . . . ., Dn↓
Dial out : tF, Dt1,Dt1 . . . . . . ., Dtn in tone mode
Dial out : tF,Dp1,Dp1 . . . . . . ., Dpn in pulse mode
LNB
: D1, D2 . . . . . . . Dn
3. Dialing with P→T key
Procedure : ↑ D1, D2 . . . . . .,P→T, . . . . . , Dn↓
Dial out : Dp1, Dp2, . . . . tPT, . . . . . , Dtn in pulse mode
LNB
: D1, D2 . . . . . ,P→T, . . . . Dn
Note : If key in digit over maximum digit stored in LNB, then RD is inhibited even after on/off hook.
B. Mixed dialing
Procedure : ↑ D1, D2 . . . . . .,P→T, D9,D10, . . . . . , Dn↓
Dial out : Dp1, Dp2, . . . . tPT, Dt9,Dt10 . . . . . , Dtn
LNB
: D1, D2 . . . . . ,P→T, D9,D10 . . . . Dn
C. Redial
LNB
: D1, D2 . . . . . Dn
Procedure : ↑ RD ↓
Dial out : Dt1, Dt2, . . . . Dtn in tone mode
Dial out : Dp1, Dp2, . . . . Dpn in pulse mode
Note : If key in digit over maximum digit stored in LNB, then RD is inhibited.
D. Pause Function
Procedure
Dial out
Dial out
LNB
: ↑ D1, D2, . . . .Dn, P, C1 . . . . .Cn↓
: Dt1, Dt2, . . . . Dtn , tp, Ct1 . . . . . . . . . Ctn in tone mode
: Dp1, Dp2, . . . . Dpn,tp, Cp1 . . . . . . . . .Cpn in pulse mode
: D1, D2 . . . . . Dn, P, C1, C2 . . . . . . . . . .Cn
E. Flash Function
1. Reset
Procedure
Dial out
Dial out
LNB
: ↑ D1, D2, . . . .Dn, F, C1 . . . . .Cn ↓
: Dt1, Dt2, . . . . Dtn , tF,Ct1 . . . . . . . . . Ctn in tone mode
: Dp1, Dp2, . . . . Dpn, tF,Cp1 . . . . . . . . .Cpn in pulse mode
: C1, C2 . . . . . Cn
* This specification are subject to be changed without notice.
10.1.1997
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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Handfree function operation:
A). To execute Handfree function : When HFO = "low", HFI pin is active , the Handfree function will be
enabled (HFO="HIGH").
B). Reset Handfree function:
a. OFF-HOOK action.
b. When HFO="high", a HFI pin is active again , the Handfree function will be reset (HFO="LOW").
Operating flow chart of Handfree
ON HKS
(0)
INITIAL
OFF
HF
HF
ON
ON HKS
(1)
HF LINE
OFF HKS
(2)
ON
HF
HF
OFF
OFF HKS
(3)
HF LINE
STATE NO.
(0) INITIAL STATE
(1) ON HKS HF LINE
(2) OFF HKS LINE
(3) OFF HKS HF LINE
PO
F
F
F
F
XMUTE
F
F
F
F
HFO
0
1
0
1
* Note :
ON : ON HKS
OFF : OFF HKS
HF : Depress HF key
* F : Floating (Hi-impedance)
SDO (Serial Data Output) function
The SDO is serial data output which format is the same with UART protocol. SDO function is designed to drive
LCD driver and voice synthesizer to display dialing number on LCD screen and announce it to speaker. The SDO
signal consists of two start bits, six data bits and two stop bits.
0
Start bit
1
Bit0
Bit1
LSB
Bit2
Bit3
Data bits
Bit4
MSB
Bit5
0
1
Stop bit
The frequency of every bit is 256Hz (about 3.9 ms)
There are two categories of dialing data, and representation of serial data is as the following:
(b5,b4=0,0) Digit key
Key
1
2
3
4
5
6
7
8
9
0
*
#
P
P-T
b3b2b1b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110
Display
1
2
3
4
5
6
7
8
9
0
P
(b5,b4=1,0) Function key
Key
HF
F
b3b2b1b0 1010 1111
Display
F
Note : */T key at pulse mode display " "
at tone mode display " "
* This specification are subject to be changed without notice.
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TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
TEST CIRCUIT
1
V+
2
Operation current
V+
A
DP
DP
DT
V
DD
KEY
BOARD
HKS
MODE
VDD
V
SS
Tone output voltage
.
4
Tone distortion
V+
V+
COUNTER
AND
AC METER
SPECTRUM
ANALYZER
TONE
VDD
KEYBOARD
ENTRY
10K
KEYBOARD
√(VL)**2+(VH)**2
Pulse output sink current(
a. V1....Vn are extraneous frequencies (ie, inter modulation and
harmonic)
components in the 500Hz to 3400Hz band.
b. VL,VH are the individual frequency components of the
DTMF signal
c. Whether keyboard is pushed refer to the TONE mode time
diagram
6
V
+
V+ open drain structure)
A
VDD
PO
A
Flash Key
V
HKS
VEXT
VSS
7
ENTRY
VSS
HKS
√(V1)**2+(V2)**2+..+(Vn)**2
5
TONE VDD
V
10K
VSS
HKS
DIST.(dB)= 20log
HKS
VSS
3
**
Standby current
A
Keypad input
VDD
ROW
HKS
R*
VSS
MODE
C *
V+
VDD
R*
Column
C*
A
HKS
VSS
MODE
Isink=I/(1-Duty Cycle) I is the net DC current measured from
ampere meter.
R* , C* mean others column and row.
* This specification are subject to be changed without notice.
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EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ABSOLUTE MAXIMUM RATINGS (Ambient Temperature is 25°C, All voltage referenced to VSS. )
Parameter
Sym.
Power Supply Voltage
Input Voltage Range
Operating Temperature
Storage Temperate
Power Dissipation
VDD
VIN
TOPR
TSTO
PD
Ratings
Unit
6.0
-0.3 ~ VDD + 0.3
0 ~ 50
-55 ~125
500
V
V
˚C
˚C
mw
ELECTRICAL CHARACTERISTICS (I) (Ambient Temperature is 25°C, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.)
(General purpose specification, fosc. = 3.579545 MHz)
Parameter
Operating Voltage
Operating Current
Standby Current
Memory retention current
Control pin input voltage
XMUTE pin
leakage current
sink current
HKS pin input current
Keyboard scanning pin
drive current
sink current
Key-in debounce time
HFI pin input resistor
HFO pin
drive current
sink current
Sym.
VDD
Iop
Is
Imr
Vil
Vih
Conditions
Tone
Pulse
Memory retension
Tone
OFF-HOOK, Keypad entry
Pulse
ON-HOOK, No Keypad entry
ON-HOOK, VDD = 1.0V
Min.
Typ.
Max.
Unit
2.5
2.0
1.0
-
0.6
5.5
5.5
5.5
2
VSS
0.7VDD
0.2
0.1
0.1
-
0.5
1
0.2
0.3VDD
VDD
mA
µA
µA
V
V
V
mA
Imth
Imtl
Ihks
Vxmute = 6.0V
Vxmute = 0.5V
Vhks = 2.5V
0.2
-
0.5
-
1
0.1
µA
mA
µA
Ikbd
Ikbs
t DB
Rhfi
*Vn = 0V,
*Vn = 2.5V,
4
200
-
10
400
20
200
30
800
-
µA
µA
ms
KΩ
0.5
0.5
-
-
mA
mA
Vhfi=0
Ihdoh Vhfo = 2.0V
Ihdol Vhfo = 0.5V
* Vn : Input voltage of any keyboard scanning pin (Row group, Column group).
* This specification are subject to be changed without notice.
10.1.1997
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
ELECTRICAL CHARACTERISTICS (II) (Ambient Temperature is 25°C, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted .)
(Pulse mode specification, fosc. = 3.579545 MHz)
Parameter
Sym.
Conditions
Pulse output pin,SDO pin
leakage current
sink current
Pulse rate
Ipoh
Ipol
fpr
Make/Break ratio
TM:TB
Pre-digit Pause
tPDP
Inter-digit Pause
tIDP
Vpo = 2.5V
Vpo = 0.5V
M/B ratio = 40:60
M/B ratio = 33:66
Pulse rate = 10pps
Pulse rate = 20pps
Min.
Typ.
Max.
Unit
0.5
-
10
20
40:60
33:66
40
33
800
500
0.1
-
uA
mA
pps
pps
%
%
ms
ms
ms
ms
ELECTRICAL CHARACTERISTICS (III) (Ambient Temperature is 25°C, All voltage referenced to VSS , VDD = 2.5V,
unless otherwise noted.)
(TONE mode specification, fosc. = 3.579545 MHz)
Parameter
TONE output pin
DC level
sink current
AC level
Load resistor
DTMF signal:
pre-emphasis
*distortion
Minimum tone duration
Minimum intertone
pause
Sym.
Conditions
Min.
Vdc
Itl
Vdtmf
Rl
VDD = 2.0V~5.5V
Vdtmf = 0.5V
Row group, RL = 10KΩ
Dist. ≤ -23dB
twist
Dist.
tTD
tITP
VDD = 2.0~5.5V, Column-Row group
RL = 10KΩ
Auto redial
Auto redial
Typ.
0.5VDD 0.2
130 155
10
1
-
-
2
-30
98/83
98/83
Max.
Unit
0.7VDD
170
-
V
mA
mVrms
KΩ
3
-23
-
dB
dB
ms
ms
* Distortion (dB) = 20 log { [(V12 + V22 + V32+...+Vn) 1/2 ] / [(VL2 + VH 2) 1/2 ]}.
VL , VH : Row group and Column group signal.
V1 ,V2 ,...., Vn : Harmonic signal (BW = 300 Hz~ 3500 Hz).
* Actual frequency output (fosc. = 3.579545 MHz)
KEYBOARD SCANNING PIN
STANDARD (Hz)
R1
f1
697
R2
f2
770
R3
f3
852
R4
f4
941
C1
f5
1209
C2
f6
1336
C3
f7
1477
* This specification are subject to be changed without notice.
OUTPUT (Hz)
699
766
848
948
1216
1332
1472
DEVIATION (%)
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
10.1.1997
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EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS
KEY IN
3
2
3
t DB
XMUTE
t ITP
PO
t ITP
t ITP
TONE
tTD
OSCO
SDO
- - - - - - High impedance
NORMAL DIALING
Figure 2: Tone Mode Timing Diagram
HKS
KEY IN
3
2
3
t DB
XMUTE
t PDP
t IDP
t IDP
t IDP
tM
PO
TONE
tM
tB
OSCO
SDO
- - - - - - High impedance
NORMAL DIALING
Figure 3: Pulse Mode Timing Diagram
* This specification are subject to be changed without notice.
10.1.1997
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
HKS
3
2
P->T
KEY IN
3
t DB
XMUTE
t PDP
t IDP
tIDP
Tpt
PO
t ITP
TONE
OSCO
SDO
- - - - - - High impedance
Figure 4: Timing Waveform for mixed dialing Operation (by P→T key entry)
HKS
KEY IN
1
RD
2
t DB
XMUTE
PO
t
ITP
t
ITP
t ITP
TONE
tD
OSCO
tITP
SDO
- - - - - - High impedance
AUTO DIALING
Figure 5: Tone Mode Redial Timing Diagram
* This specification are subject to be changed without notice.
10.1.1997
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EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS
KEY IN
XMUTE
3
2
t
RD
DB
XMUTE
t IDP
t
t IDP
t
IDP
IDP
PO
TONE
OSCO
SDO
- - - - - - High impedance
Figure 6: Pulse Mode Redial Timing Diagram
HKS
KEY IN
*PULSE MODE:
3
2
P
3
t DB
XMUTE
t PDP
t IDP
t IDP
TP
tIDP
PO
TONE
OSCO
*TONE MODE:
t DB
XMUTE
PO
Tp
t ITP
t ITP
t ITP
TONE
OSCO
SDO
- - - - - - High impedance
Figure 7: Pause key operating timing
* This specification are subject to be changed without notice.
10.1.1997
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EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
HKS
KEY IN
F
t DB
XMUTE
PO
TF
TONE
OSCO
SDO
- - - - - - High impedance
Figure 8: Flash key operation timimg
HKS
2
KEY IN
SDO
T T b b b
S S 0 1 2
0
1 0 1
b b b T T
3 4 5 SP SP
0 0 0 0 0
1
Figure 9: SDO operation timimg
* This specification are subject to be changed without notice.
10.1.1997
13
Ring
Tip
* This specification are subject to be changed without notice.
2
5
8
0
1
4
7
*
3
6
9
#
P→T
F
P
R/P
IN4004*4
OFF
VDD
ZNR
120V
ON
820k*6
16
17
18
15
.1µ
6
3.579545MHz
5
8
VSS
SDO
XMUTE
KT
TONE
HKS
VDD
11
100µ
16V
IN4148
IN4148
EM91810A
PO
13
OSCI OSCO
R1
R2
R3
R4
C4
4
C1
1
2 C2
3 C3
100K
330K
IN4148
100K
MPSA92
MPSA42
2K2
240K
HOOK SW
22M
EM91810A Application Example
7
10
14
12
C945
LCD PANEL
1µ
100µ/16V
2K7
LCD Driver
470K
Z.D.
5V1
1.5V
TO HANDSEET
2 WIRE TO 4 WIRE
SPEECH NETWORK
100K
220K
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91810A/B
APPLICATION CIRCUIT
TONE
20PPS
20PPS
10.1.1997
14
Ring
ZNR
120V
HOOK ON
C945
3K3
240K
MPSA92
0.1µF
330K
1.5V
HFO
47K
100K
100K
SW
LCD PANEL
LCD Driver
3.579545 MHz
1µ
+
47K
HF
KEY
100K
C945
200K
14
10
6
5
9
+
SDO
OSCO
OSCI
HFI
PO
HKS
100µ
16V
470K
15
.1µ
IN4148
.001µ
3
2
VSS C4 C3 C2
8
16
TONE
1
7
4
18
19
20
17
12
11
820K*6
C1
R1
R2
R3
R4
HFO
KT
XMUTE
DD
13
V
5V1
EM91810B
.1µ
IN4148
2K2
.02µ
1
4
7
*
VDD
2
5
8
0
3
6
9
#
P →T
F
P
RD
2 TO 4 WIRE
SPEECH NETWORK &
AUDIO AMPLIFIER
200
C945
TO HANDSET
TONE
22M
20PPS
* This specification are subject to be changed without notice.
10PPS
Tip
IN4004*4
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
APPLICATION CIRCUIT
10.1.1997
15
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
PACKAGE INFORMATION
Example :
EM
(1)
91215 P
(2) (3)
(1) ELAN MICRO. pefix
(2) Type number
(3) Package code:
P→PDIP
K→Skinny
R→SDIP
18/20/28 Lead Plastic Package
E1
1
D
E
A
A1
L
C
B
e
B1
eB
18 PDIP
DIM
A
A1
B
B1
C
D
E
E1
e
eB
L
MILIMETERS
MIN. MAX.
5.334
0.381
0.356 0.558
1.150 1.778
0.204 0.381
22.35 23.37
7.620 8.255
6.096 7.112
2.286 2.794
10.92
2.921 4.064
20 PDIP
INCHES
MILIMETERS
INCHES
MIN. MAX. DIM MIN. MAX. MIN. MAX.
.210
A
5.334
.210
.015
A1 0.381
.015
.014 .022
B
0.356 0.558 .014
.022
.045 .070
B1 1.150 1.778 .045
.070
.008 .015
C
0.204 0.381 .008
.015
.880 .920
D
25.40 26.67 1.000 1.050
.300 .325
E
7.620 8.255 .300
.325
.240 .280
E1 6.096 7.112 .240
.280
.090 .110
e
2.286 2.794 .090
.110
.430
eB
10.92
.430
.115 .160
L
2.921 4.064 .115
.160
* This specification are subject to be changed without notice.
28 PDIP
MILIMETERS
DIM MIN. MAX.
A
6.350
A1
0.381
B
0.356 0.558
B1
1.016 1.778
C
0.204 0.381
D
35.56 37.85
E
15.24 15.88
E1
13.21 14.73
e
2.286 2.794
eB
17.78
L
2.921 5.080
INCHES
MIN. MAX.
.250
.015
.014
.022
.040
.070
.008
.015
1.400 1.490
.600
.625
.520
.580
.090
.110
.700
.115
.200
10.1.1997
16
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
22/24 Lead Plastic Package-Skinny
E1
1
D
E
A
A1
L
C
B
e
B1
eB
22 PDIP (skinny)
DIM
A
A1
B
B1
C
D
E
E1
e
eB
L
MILIMETERS
MIN.
MAX.
4.752
0.381
0.356
0.558
1.27
1.778
0.204
3.556
25.90
26.67
7.620
8.255
6.223
6.604
2.286
2.794
8.382
10.16
2.921
4.064
24 PDIP (skinny)
INCHES
MIN.
MAX.
.180
.015
.014
.022
.050
.070
.008
.014
1.02
1.05
.300
.325
.245
.260
.090
.110
.330
.400
.115
.160
* This specification are subject to be changed without notice.
DIM
A
A1
B
B1
C
D
E
E1
e
eB
L
MILIMETERS
MIN.
MAX.
4.572
0.381
0.356
0.558
1.27
1.778
0.204
0.381
31.24
32.26
7.620
8.255
6.223
6.731
2.286
2.794
8.636
9.652
2.921
4.064
INCHES
MIN.
MAX.
.180
.015
.014
.022
.050
.070
.008
.015
1.23
1.270
.300
.325
.245
.265
.090
.110
.340
.380
.115
.160
10.1.1997
17
EM91810A/B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
42 SDIP Package
E1
D
E
A A2
C
A1
L
D1
B
e
B1
eB
42 SDIP
DIM
A
A1
A2
B
B1
C
D
E1
e
eB
D1
L
MILIMETERS
MIN.
MAX.
5.08
0.381
3.937
4.191
0.356
0.559
0.914
1.116
0.204
0.304
36.70
37.34
13.84
14.10
1.727
1.829
15.24
17.78
0
0.127
2.921
3.429
* This specification are subject to be changed without notice.
INCHES
MIN.
MAX.
0.200
0.015
0.155
0.165
0.014
0.022
0.036
0.044
0.008
0.012
1.445
1.470
0.545
0.555
0.068
0.072
0.600
0.70
0
0.005
0.115
0.135
10.1.1997
18